# Tic-Tac-Toe Program using 
# random number in Python 

# importing all necessary libraries 
import numpy as np 
import random 
from time import sleep 

# Creates an empty board 
def create_board(): 
	return(np.array([[0, 0, 0], 
					[0, 0, 0], 
					[0, 0, 0]])) 

# Check for empty places on board 
def possibilities(board): 
	l = [] 
	
	for i in range(len(board)): 
		for j in range(len(board)): 
			
			if board[i][j] == 0: 
				l.append((i, j)) 
	return(l) 

# Select a random place for the player 
def random_place(board, player): 
	selection = possibilities(board) 
	current_loc = random.choice(selection) 
	board[current_loc] = player 
	return(board) 

# Checks whether the player has three 
# of their marks in a horizontal row 
def row_win(board, player): 
	for x in range(len(board)): 
		win = True
		
		for y in range(len(board)): 
			if board[x, y] != player: 
				win = False
				continue
				
		if win == True: 
			return(win) 
	return(win) 

# Checks whether the player has three 
# of their marks in a vertical row 
def col_win(board, player): 
	for x in range(len(board)): 
		win = True
		
		for y in range(len(board)): 
			if board[y][x] != player: 
				win = False
				continue
				
		if win == True: 
			return(win) 
	return(win) 

# Checks whether the player has three 
# of their marks in a diagonal row 
def diag_win(board, player): 
	win = True
	y = 0
	for x in range(len(board)): 
		if board[x, x] != player: 
			win = False
	if win: 
		return win 
	win = True
	if win: 
		for x in range(len(board)): 
			y = len(board) - 1 - x 
			if board[x, y] != player: 
				win = False
	return win 

# Evaluates whether there is 
# a winner or a tie 
def evaluate(board): 
	winner = 0
	
	for player in [1, 2]: 
		if (row_win(board, player) or
			col_win(board,player) or
			diag_win(board,player)): 
				
			winner = player 
			
	if np.all(board != 0) and winner == 0: 
		winner = -1
	return winner 

# Main function to start the game 
def play_game(): 
	board, winner, counter = create_board(), 0, 1
	print(board) 
	sleep(2) 
	
	while winner == 0: 
		for player in [1, 2]: 
			board = random_place(board, player) 
			print("Board after " + str(counter) + " move") 
			print(board) 
			sleep(2) 
			counter += 1
			winner = evaluate(board) 
			if winner != 0: 
				break
	return(winner) 

# Driver Code 
print("Winner is: " + str(play_game())) 
